Container



June 15 ,1926. 3,588,933

R. S. BOLGER CONTAINER Filed March 5, 1925 3 Sheets-Sheet 2 Ril yPatented June 15, 19.26.

ROBERT s. Bonanza,` or NEW YORK, N. Y.

CONTAINER.

Application ledMarch 5, 1925. Serial 110. 13,302.

This applicationgis a continuation in part V-of application SerialNumber 736,110 filed September `5th, 1924.

It is well known that ordinary librous materials are comparativelynon-elastic, that is, non-stretchable. However, I have found that a certain amount of stretch can be imparted to such fibrous materials if these' materials are treated to soften them so as to "allow for the re-arrangement of the fibers when a stretch is imparted to the sheet material. This stretchability can also be obtained by crinkling sheet material. utilizing this property I yhave been able to form a container from an imperforate blank of sheet material such that the blank is stretched at certain parts and lessso at others. Another method of obtaining the analogous stretchability vot' the blank and expandibility of the tube is disclosed inapplication, Serial Number 736,110, of which this application is a continuation in part.

Another object of my invention is to provide certain methods of forming containers from stretchable blanks.

Another object of my invention is to provide certain means for carrying out the aforementioned process. 1

Another object of my invention is to t'ormI containers from one'or more imperforate blanks.

Another object is to provide a method for forming expandible tubes from a plurality of imperforate blanks. l

Another object of myinvention is to provide novel end closures for containers.

Another object of my invention is to torm'l` containers having stretchable walls which conform substantially to articles placed within said containers.

Brz'ef description of drawings. VJ ln ,the accompanying drawings: Fig..1 is a plan view of part of a blank of al crinkled sheet material.'

Fig. 2 .is an edge view ofthe blank shown in Fig. 1. y Y

Fig. 3 is an end view lof a tube wound forma blank of crinkled material similar to. that'shown-in Fig. 1.3

Fig.4 is a side view'pa'rtly'in section'of thetube shown'i-n Fig. 3. i

@ff plain-'atea maar bla Fig. 6 is an edge view of the blank shown 1n Fig. 5.

Fig. 7 is an end view of a' tube wound from a blank of plain material similar to that shown in Fig. 5.

Fig. 8 is a side elevation, partly in section, of the tube shownl in Fig. 7.--

Fig. 9 is a s ide elevation illustrating the method of dampening, printing, cutting, feeding, pasting, used in making tubes from a blank of sheet material. Figw 10 is a view illustrating a tube wound 1n spiral formation showing one bodyv torming section partly detached.

Fig. 11 is a view of the body forming tube. A

` Fig. 12 is a view ofthe tube illustrated in Fig. l1 after placing the same. over the exwinding and oompacting panding'tube and surrounded by t-he outer form.

Fig. 13'is a view similar to Fig. 12 showing the body forming tube partly expanded.

Detail description.

One of the types oi" the sheet material employed in this invention is a. crinkled ypaper commbnly known in the trade as .kraft paper, shown at 1 in Fig. 1.

This paper is characterized by the fact that it has been creeped or crowded in one direction, forming crinkles with raised portions 2 above the base 1 and 2.

'Fhls type of paper has considerable port-ions 3. See Figs.

stretchability and can be stretched in a direction transverse to the crinkles as far as its original length without rupture of the material.

The stretchability resides, in this type, not in the material itself, but rather the blank cut from this material is stretohable because of the crinkling of the material, i. Anotherjtype of sheet material thatis amenable -to this process is longV tibered aper, the general direction of thev fibers 2. @iii Substantially .in -diretion :cf the employed-fseek as 1s shown at yin Figs. 5 and 6. Such a paper in its normal In this type of blank, the material is.

lnade stretchable, and the blank is stretchable by virtue of the stretchability of the material per se.

One method of forming a container from blanks of sheet material such as described above is to roll a blank of such sheet materia-l of desired width and length into tubular formation shown in Figs. 3, 4, 7 and 8 by the method shown in Fig. 9, and toexpand said tube 'by the method shown at Figs. 12, 13 and 14 into a desired shape for instance, a barrel shape.

I't is to be observed that by a tube I do not meanf necessarily a cylindrical tube, I mean a tube-like structure of any desired cross-sectional shape. However, I find a' cylindrical tube to be the preferred type.

In Fig. 9 is shown the tube winding mechanism.

S is a roll of sheet material, 1 or 1. When'material 1 is used it passes over the idler rolls L` and between the rolls N, N.

Then it passes between the knives O and O and is carried by the conveyer T between the roll G and H and over the conveyer belt T and is wound on thel mandrel V. The gumrning device is composed of a fountain U containing the adhesive employed,

` the fountain roll E, the intermediate roll F and the gumming roll G. H is a roll employed to back`up the sheet material against the gumming roll G. D is a lever operated by a mechanism not'shown which brings the roll G into contact with the sheet material for a predetermined length of time.

'equal to the width ofthe roll of sheet material S. This width may be equal to the .length of the tube which it is desired to eX- pand or may b'e' greater than that length, in

whichV/,case the tube is severed into the de- Thel/"gumming device is lifted. The second blank then progresses to the mandrel to which it is secured and part of one turn of the mandrel is made, whereupon the gumming devicewis brought -into play when a mandrel length e ual to the circumference of the as passed over roll H. This is done to prevent adhesive being applied to the inner surface of the tube.

If it be. desired to print any'matter on the outside of the tube the roll -Py may be' part of a printingdevice X which is brought into contact at the desired time and for the desired length of time by the cam Y or by any other suitable mechanism.

It is obvious that where it be advisable the printing can be done by some other mechanism suitable other than that' illustrated.

The method above described\ is suitable for the crinkled type of paper since it forms a tube which is expandible. However, the same method may be used for the noncrinkled paper by softening the paper. This may be done by passing the paper through a water or chemical bath M, maintained at the requisite temperature by M or other device, the paper passing over rolls L. The process from then on is the same as that previously described. Instead of softening the material before winding, the tube after winding may be softened before expanding the said tube. The softening of the tube may also be done in addition to that of the blank. d

Instead of spirally winding the tube it magl be helically wound as shown in Fig. 10 an as is well known in the art. In such case the blank is not severed and a con'- tinuous tube is formed as is shown in Fig'. 10. This tubeA is formed .by the oyerlappin strips 4, 5, 6 and 7. The tube is shown at 7 in Figs. 10 and 11.

The tube formed by` any of the above methods is expanded into any desired container form by the method illustrated in Figs. 12, 13 and 14, and patented to me in Patent No. 1,428,469 on September 5th, 1922. This method consists in placing the tube (ver an expandible form 50, such as a rubber diaphragm, before the adhesive has set.

The tube is encased by a form 51 of any desired shape, shown in this shape as bilge shape. A fluid is then introduced under pressure through the ypipe 52 into the ports 53 on the inner 'side of the expandible djaphragm 50. The expansion of the diaphragm causes the tube to be expanded first to the position shown in Fig. 13 and then to that shown in Fig. 14 where the tube is lexpanded against the form 51.

The tubeconforms to the shape of 'the form 51 and the several layers of the; tube are compacted under pressure. The ad# hesive then sets, forming a rigid structure ofthe desired shape.

It is to understood that by the term expanding is meant. desired expansion, and as used lnthecleims means expanding to f orm the tube lint some shape that is des1red,`wherein the tube is expanded at such parts as is desired. The specific method of Adeforming the tube as. explained above is `but one illustration of means that may be employed. Other methods of altering the dimensions of the tube such as constricting parts of the tube, areI applicable as will be Wellunderstood by those skilled in the art. The peculiar utility of the stretchable feature Wherever the total surface area of the tube is altered to get a desired body shape is apparent. The tube being deformed Without a material weakening af the body or danger of rupture. v

The ,forms illustrated in Figs. 12, 13, 14 Will yield the container shown in Fig. 15

- when a helically. Wound tube of sheet material'is employed which in the container in portions thereof before vsaid Fig. 15 is illustrated as crinkled. If the proper form is employed any desired shape corresponding to the form will be obtained, for example, a container of barrel shape.

The preferred Sheet material in this invention is paper. However, any sheet material which is stretchable or which may be stretchable under some conditions may be used, such as ufibrous sheet materialincluding Wood veneer. f

The container maybe given additional rigidity by conventional meansr such as hoops, rings, surface coating, chemical treatment Where suitable, etc. llt is also contemplated to Water-proof the container by coating or other treatment as is well known in the art.

rThe specific embodiment; of the invention is to be taken as illustrating the invention and not as limiting it, except as recited in the claims.

,l claimas my invention:

l.A The method of forming a body of de'- sired formation, comprising adhesively coating a blank of sheet material, Winding said blank upon itself to form a tube and eX- panding said tube under compacting pres-V sure `before said adhesive has set to form afbody of desired formation.

2. 'lliemethod of forming a container body of desired formation 'comprising adhesively coating a stretchable blank of sheet material, Winding said blank in a tubular formation and then before said adhesive has set stretching portions thereof to form the container body. i 3. The method .of forming a .container body of desired formation comprisin adhesively coating a stretchable lmper orate blank of sheet material, winding said blank int-o tubular'formation and then stretching jadhesivehas set to form the container body.

4. The method of forming a body vof desired formation com rising adhesively lcoating a stretchable bank of she'etf'inmaterials Winding said blank to form a tube, and eX- panding said tube before said adhesive has set to form a body of desired formation.

5. The method of forming a body of desired formation comprising adhesively coating a stretchable imperforate blank of sheet material, Winding said blank toy form a tube,

and. expanding said tube before said adhesive has set to form a body of desired formation.

6. The method of forming a body of desired formation comprising adhesively coating a stretchable blank of sheet material, Winding said blank to form a tube, and deforming said tube under compacting pressure before said adhesive has set to form a body of greater surface area than the tube.

7. The method of forming a body of desired formation, comprising 4treating a blank of sheet material to make 4the blank stretchable, Winding said blank to form a. tube and deforming saidtube to forma sub- A. stantially rigid body ofA greater surface area vthan the tube. y

8. The method of forming a bodyvof desired forma-tion, comprising treating a blank of sheet material to make the blank stretchable, adhesively coating said blank, Winding said blank to form a tube, and d'eforrning said tube to form a body of greater surface areal than the tube.

9. The method of forming a body of desired formationcomprising treating a blank of sheet material to @make the blank stretchable, winding said blank to form a tube, and deforming said tube under compacting pressure to form a body of greater surface area than the tube.

10. rlhe method of forming a body of desired formation, lcomprising treating a blank of sheet material to make the blankstretchable, adhesively coating said blank, Winding said blank to form a tube, and deforming said tube under compacting pressure to yform a body of greater `surface 'area than the tube.

11. 'lhe method of forming a container body comprising Winding a blank of crinkled` sheet material to form a tube and expanding said tube to form a substantially rigid container body.'

12The meth d of forming a body of desired formation, comprising adhesively coating a blank of crinkled sheet material, Winding said blank to form a tube, andiexpanding said tube lto form a body of desired formation.

13. The mailed of forming boay of de,

sired formation, comprising adhesively coating a blankof crinkled sheet material, winding said blank to form a tube, and deforming saidtube undercompacting pressure to .form a body of greater surface area than the tube. a

14. Themethcol ct fcrmlng a body of delll) sheet material to form al tube and deforming said tube to form al body of greater surface v area than said tube.

15. The method of forming a body of desired formation, oomprisino; treating sheet material to make it stretchable, adhesively coating said sheet material, winding said sheet material to form a tube, and deforming said tube to form a body of greater surn sired formation comprising coating sheet face `areathan said tube.

16. The method of formnga body of desired formation comprising treating sheet material to make it stretchable, windingsaid sheet material toform a tube and deformng said tube under compacting pressure to form a body of greater surface area than said tube.

17. The method of forming a body of desired formation, comprising treating sheet material to make itistretchable, Aadhesively coating said sheet material, winding said sheet material to form a tube, and deforming said tube under compacting pressure to form a body of greater surface area-than said tube.

18. The method of forming a body of desired 'formation sheet material to make it stretchable, winding said sheet material te form a tube, and expanding said tube to form a body of desired formation. 19. The method of forming a body of de: sired formation, comprising treating sheet material to make it stretchable, adhesively coating said sheet material, winding said sheet material to form a tube, and expanding said tube toV form a body of desired formation.

20. The method of forming a body of desired formation comprising coating sheet material with adhesive, winding said sheet material into a` tube, and deforming said tube into the desired formation before said adhesive has set. l

21. The method of forminga body of desired 'formation comprising coating sheet comprising treating material with adhesive, winding said sheet material into 'a tube, and deforming said tube under compacting pressure into the desired formation before'said adhesive has set.

22. The method of forming a body of desired formation comprising coating sheet material with adhesive, winding said sheet material into a tube, and expanding said tube into the desired formation before said adhesive has set.

23. The method of forming a body of dematerial with adhesive, winding said sheet material into a tube, and expanding said tube under compacting pressure into the desired formation before said adhesive has set.

24. The method of forming a body of desired formation which comprises winding sheet material into a tube, said sheet material'having been treated previous to said winding to make. the tube expandible, and expanding said tube.

25.v The method of forming a body of desired formation, which comprises winding sheet material into a tube, said sheet material having been treated previous to said winding` to make the Atube deformable without materially weakening of said sheet material, and deforming said tube to give a body in which the sheet material is not materally weakened by said distortion. 26; The method of forming a body of desired formation, which comprises winding said sheet material into a tube, said sheet material having been treated previous to said winding to make the tube expandible without materially weakening of said sheet material, and ex anding said tube to give a body in which t e sheet material is not materially weakened by said distortion.

27. The method of forming a body of desired formation which comprises treating sheet material to make it more stretchable at certain parts of the material and less stretchable at other parts of said material,

and winding said material into a tube and 

